​​Validate, define, and use dynamic and text-based data.

CUE is an open source language, with a rich set of APIs and tooling, for defining, generating, and validating all kinds of data: configuration, APIs, database schemas, code, … you name it.

Features:
- Data Validation. Validate text-based data files or programmatic data such as incoming RPCs or database documents.
- Configuration. Just add validation to existing data (CUE, YAML, JSON), reduce boilerplate in large-scale configurations, or both.
- Schema Definition. Define schema to communicate an API or standard and validate backwards compatibility.
- Generate Code and Schema. Keep validation code in sync across code bases, Protobuf definitions, and OpenAPI definitions.
- Scripting. Automate the use of your data without writing yet another tool.
- Querying. Find the locations of instances of CUE types and values in data. Coming soon.

https://cuelang.org/

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